CONTENTS 



Page 



ABSTRACT y 



PREFACE vi 



INTRODUCTION 1 



Development ond Production 1 



Deposit Descriptions 2 



Samples and Chemical Analyses 2 



Reserves 2 



Definitions 2 



Purpose ond Time of Investigation 3 



Acknov^ledgments 3 



NORTHERN COAST RANGES REGION (A) 5 



Humboldt District (A-1 ) 5 



Mendocino District (A-2) 7 



Clear Lake District (A-3) 8 



CENTRAL COAST RANGES REGION (B) 11 



Healdsburg District (B-1 ) 12 



North Bay District (B-2) 13 



San Francisco Boy District (B-3) 18 



Sonto Clara District (B-4) 35 



Santa Crur District (B-5) 42 



SOUTHERN COAST RANGES REGION (C) 53 



Gobilon Range District (C-1 ) 54 



Panoche Hills District (C-2) 73 



Northern Santo Lucia Range District (C-3) 74 



Parkfield-Coalingo District (C-4) 82 



Southern Sonto Lucio Range District (C-5) 83 



Santo Ynez District (C-6) 92 



REFERENCES 98 



INDEX TO DEPOSITS 101 



ILLUSTRATIONS 



Plote 1 Mop of limestone and dolomite deposits and districts of the Coast Ranges regions: 



northern (A), central (B), ond southern (C) Pocket 



Plote 2 Mop of limestone ond dolomite deposits, northern Gobilon Range Pocket 



Page 



Figure 1 Index map of Coast Ronges limestone ond dolomite province 2 



Figure 2 Map showing distribution of oyster shells in southern San Froncisco Bay 26 



Figure 3 Mop of Permonenle and Monte Bello Ridge limestone deposits 39 



Figure 4 Mop of limestone deposits neor Sonto Crui 44 



Figure 5 Mop showing distribution of Sur Series carbonate rocks, northern Sonto Lucio Ronge 75 



Figure 6 Geologic mop of Pico Blanco limestone deposit, Monterey County 80 



Figure 7 Geologic mop of Dubost limestone deposit. Son Luis Obispo County 85 



Figure 8 Geologic map of Lime Mountain limestone deposit. Son Luis Obispo County 88 



Figure 9 Mop of Sierra Blonco Limestone, Sonto Borboro County 97 



